491302980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{389923}}^1$

素因数の和:389945

約数の個数: 72

約数和(自身を含む): 1703188032

約数和(自身を除く): 1211885052

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 389923, 779846, 1169769, 1559692, 1949615, 2339538, 2729461, 3509307, 3899230, 4679076, 5458922, 5848845, 7018614, 7798460, 8188383, 10917844, 11697690, 13647305, 14037228, 16376766, 17546535, 23395380, 24565149, 27294610, 32753532, 35093070, 40941915, 49130298, 54589220, 70186140, 81883830, 98260596, 122825745, 163767660, 245651490, 491302980]

約数ペア:

[(1, 491302980), (2, 245651490), (3, 163767660), (4, 122825745), (5, 98260596), (6, 81883830), (7, 70186140), (9, 54589220), (10, 49130298), (12, 40941915), (14, 35093070), (15, 32753532), (18, 27294610), (20, 24565149), (21, 23395380), (28, 17546535), (30, 16376766), (35, 14037228), (36, 13647305), (42, 11697690), (45, 10917844), (60, 8188383), (63, 7798460), (70, 7018614), (84, 5848845), (90, 5458922), (105, 4679076), (126, 3899230), (140, 3509307), (180, 2729461), (210, 2339538), (252, 1949615), (315, 1559692), (420, 1169769), (630, 779846), (1260, 389923)]